// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db=cloud.database();
// 云函数入口函数
exports.main = async (event, context) => {
  
  
  const wxContext = cloud.getWXContext()
  return await db.collection('topic').
  where({
    _openid:wxContext.OPENID
  })
  .orderBy('lastReplytime','desc')
  .get()


}